The Miele Duoflex HX1 takes the Miele Duoflex HX1 Fine Dust Filter HX-FDF 20 as its filter; replace it every 3 years; Australian sellers list it from A$12.00 each as of 26 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your vacuum cleaner
Miele Duoflex HX1
Stick vacuum
Confirmed against Miele's listConfirmed against Miele's own compatibility list
Not yours? ChangeSave it · remind me every 3 years
Takes the HX-FDF 20 filter
Duoflex HX1 Fine Dust Filter HX-FDF 20 · replace every 3 years · check the code printed on your old filter before ordering.
Your vacuum cleaner
Stick vacuum
Confirmed against Miele's listConfirmed against Miele's own compatibility list
Takes the HX-FDF 20
Filter · every 3 years · check the code on your old filter.
Other Miele vacuum cleaners and their filters and dust bags
The HX-FDF 20 fits the Duoflex HX1 only. These Miele models take a different filter:
GenuineGenuine Miele
$55.00
Miele Australia · 5 NovLowest genuine · Miele Australia · checked 5 Nov
CompatibleCompatible option
$12.00 each
2-pack $23.99
Amazon AU · 26 OctAmazon AU · checked 26 Oct
Check sellerCheck seller details
Genuine: made by Miele. Compatible: another brand.Genuine is made by Miele. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest compatibleLowest compatible price · $12.00 each · 2-pack $23.99
Amazon AU. Compare with genuine below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.
Compare 2 sellers
AUD, before delivery. Each price shows when it was checked.
Compatible options
1 seller
Opens Amazon AU in a new tab. Their page is the source of truth for price, delivery and returns.
Not due yet?
Get a nudge when your filter is due — it's every 3 years. One email two weeks before, no newsletter. Manage or stop it anytime.
How to change the filter in your Miele Duoflex HX1
Watch the guide or follow the steps.
- 1Switch the Duoflex off. Press both release buttons at the side of the fine dust filter lid and pull the filter up out of the PowerUnit.
- 2Take the lid off the old filter; the new HX-FDF 20 comes without one.
- 3Fit the old lid to the new filter and push the filter back into the PowerUnit until it clicks.
- 4Between changes, turn the cap ten times through 180° and tap the filter out over a bin at least every 3 months. No water.
Every number this part goes by
- Retail name:
- 12518910
- Retail name:
- HX FDF 20
- Retail name:
- HX-FDF 20
- Retail name:
- HXFDF20
Sellers list any of these; they are the same part.
About your Miele Duoflex HX1
Miele vacuum cleaner, stick vacuum — Duoflex. Its filter is the Duoflex HX1 Fine Dust Filter HX-FDF 20, part HX-FDF 20, changed every 3 years.
Where the model number is: The rating label is on the underside of the vacuum: the series (Complete C3, Compact C2, Guard L1) is printed on the body and the model code (SGE…, SDA…) on the label. The bag type (GN, FJM, TU) is printed on the old bag's collar.
Fits this Miele model
Miele1 model
Common questions
- Which filter fits the Miele Duoflex HX1?
- The Miele Duoflex HX1 takes the Miele Duoflex HX1 Fine Dust Filter HX-FDF 20. Compatible filters made to the same specification also fit.
- How often should I replace the filter in my Miele Duoflex HX1?
- Every 3 years. It works less well as the filter fills up, so it's worth doing on time.
- Where can I buy the HX-FDF 20 in Australia?
- We track 2 Australian sellers for the HX-FDF 20; the lowest listed price when we last checked was A$12.00 at Amazon AU. Prices are re-checked daily and dated on this page.
- How do I fit the HX-FDF 20 in a Miele Duoflex HX1?
- No tools, a few minutes: 4 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- Suction drops and the vacuum may cut out on a blocked filter.
- Is there anything to reset afterwards?
- No reset.
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